Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

# A Helical Charge Simulation based 3-D Method for Calculating AC Stranded Conductor’s Corona Loss in the Corona cage

Version 1 : Received: 1 November 2017 / Approved: 1 November 2017 / Online: 1 November 2017 (17:03:45 CET)

How to cite: Liu, Y.; Huang, S.; Liu, S.; Liu, D.; Huang, Z. A Helical Charge Simulation based 3-D Method for Calculating AC Stranded Conductor’s Corona Loss in the Corona cage. Preprints 2017, 2017110014 (doi: 10.20944/preprints201711.0014.v1). Liu, Y.; Huang, S.; Liu, S.; Liu, D.; Huang, Z. A Helical Charge Simulation based 3-D Method for Calculating AC Stranded Conductor’s Corona Loss in the Corona cage. Preprints 2017, 2017110014 (doi: 10.20944/preprints201711.0014.v1).

## Abstract

Corona loss generated from conductors is one of the important design factors on ac transmission lines. Based on helical charge simulation method, the 3-D corona loss calculation model considering the conductors’ outer strands in the corona cage is established. With regard to 2-D corona-loss calculation method, the calculation model proposed in this paper can take the electric field strength’s nonuniformity along the axial direction of stranded conductor into consideration, furthermore, it can also calculate the corona loss when the conductor has sag. The calculation results of the LGJ-300/40 and LGJ-400/35 in the small corona cage well coincide with the measurement results, which indicates that the corona-loss calculation model is appropriate. In addition, the corona loss of the bundle conductors 4 × LGJ720 with sag in UHV corona cage is also analyzed.

## Subject Areas

corona loss; helical charge; 3-D calculation model; stranded conductor; sag

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